I saw these Kanken bags in an article in a magazine somewhere, and I just thought that I had to look into buying one of these awesome bags. I am so glad that I did; the colour is beautiful (I bought the teal one) and it's surprisingly spacious. I can fit pretty much all of my college supplies in it, including ringbinders and notebooks. This bag is definitely essential if you want to make a statement - you're bound to have people ask you about your bag and where you got it from. I love my Kanken, and you will definitely regret it if you don't invest in one soon!